Latitudinal Variations of Particle Fluxes in the Southern Ocean: A Bottom Tethered Sediment Trap Array Experiment

本研究项目是美国联合全球海洋通量研究（JGOFS）南大洋方案的一部分，目的是：(1)更好地了解南大洋有机和无机碳通量，(2)确定调节这些通量的大小和变化的物理、生态和生物地球化学因素和过程，以及(3)将这些通量置于当代全球碳循环的背景下。这项工作是“南大洋实验”（Southern Ocean Experiment）中44个合作项目之一。南大洋实验是在南极极地锋区（Antarctic Polar fronzone）以南进行的一项为期三年的努力，旨在追踪碳从空气-海洋界面通过整个水柱进入底部沉积物的有机和无机途径的流动。该实验将利用RVIB纳撒尼尔B.帕尔默和R/V汤普森。该项目将通过一系列安装在底部的沉积物捕集器直接测量颗粒物向下的通量。这些捕集器将维持18个月的时间，采样分辨率为17天，在夏季浮游植物大量繁殖期间分辨率更高。从这些测量中获得的有机碳、氮、生物硅酸盐和碳酸钙的总出口通量代表了JGOFS计划的基本核心变量。＊＊＊

9530300 Honjo This research project is part of the US Joint Global Ocean Flux Study (JGOFS) Southern Ocean Program aimed at (1) a better understanding of the fluxes of carbon, both organic and inorganic, in the Southern Ocean, (2) identifying the physical, ecological and biogeochemical factors and processes which regulate the magnitude and variability of these fluxes, and (3) placing these fluxes into the context of the contemporary global carbon cycle. This work is one of forty-four projects that are collaborating in the Southern Ocean Experiment, a three-year effort south of the Antarctic Polar Frontal Zone to track the flow of carbon through its organic and inorganic pathways from the air-ocean interface through the entire water column into the bottom sediment. The experiment will make use of the RVIB Nathaniel B. Palmer and the R/V Thompson. This project will make direct measurements of the downward flux of particulate matter through an array of bottom-mounted sediment traps. These traps will be maintained for an eighteen month period, and have a sampling resolution of seventeen days, with higher resolution during the intense summer phytoplankton bloom. The total export fluxes of organic carbon, nitrogen, biogenic silicates, and calcium carbonate that can be obtained from these measurements represent the basic core variables of the JGOFS program. ***